About SDOT

Mission: to deliver a high-quality transportation system for Seattle

Vision: a vibrant Seattle with connected people, places, and products

Did you know 27% of Seattle’s land is made up of streets, sidewalks, and other transportation-related public space? That’s a lot of land, but it’s still a finite amount of space to move a growing amount of people and goods in and around.

Our portfolio of work is vast. From filling potholes to paving streets, tweaking traffic signals and helping buses and freight deliveries run on time, creating enjoyable public spaces and building out a network of bike lanes and sidewalks to serve all ages and abilities. And that’s just a snapshot.

In our quickly growing city, how we get around – how safe it is, how much it costs, how much time it takes, and how reliable it is – is top of mind for most of us just about every day.

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The Seattle Department of Transportation (SDOT) develops, maintains, and operates a transportation system that promotes the mobility of people and goods, and enhances the quality of life, environment, and economy of Seattle. In June 2002, SDOT was created by combining transportation planning from the former Strategic Planning Office with the former Seattle Transportation Department to bring a more comprehensive approach to transportation service delivery. A major element of SDOT's creation was the establishment of the Policy, Planning, and Major Projects division, which is charged with transportation system planning and providing increased control and influence over major projects under construction in Seattle.